Table 1 Clinicopathologic characteristics of all the patients.
Characteristics | Total (n = 820) | Test (n = 246) | Train (n = 574) | P value |
|---|---|---|---|---|
LONT (Mean ± SD) | 0.65 ± 0.32 | 0.65 ± 0.35 | 0.64 ± 0.32 | 0.681 |
Tumor size (Mean ± SD), (cm) | 2.70 ± 1.28 | 2.82 ± 1.31 | 2.65 ± 1.26 | 0.081 |
PLN count (Mean ± SD) | 0.71 ± 2.34 | 0.74 ± 2.79 | 0.70 ± 2.12 | 0.840 |
ELN count (Mean ± SD) | 12.71 ± 5.79 | 12.52 ± 6.20 | 12.79 ± 5.60 | 0.531 |
NLN count (Mean ± SD) | 12.00 ± 5.61 | 11.78 ± 5.95 | 12.09 ± 5.46 | 0.465 |
Distance from the anal verge count (Mean ± SD), (cm) | 6.48 ± 2.44 | 6.49 ± 2.54 | 6.48 ± 2.40 | 0.964 |
Postoperative hospital stay count (Mean ± SD), (day) | 8.72 ± 5.30 | 9.07 ± 6.49 | 8.57 ± 4.69 | 0.217 |
Age count (Mean ± SD), (year) | 55.98 ± 11.23 | 56.67 ± 10.59 | 55.68 ± 11.49 | 0.244 |
Sex (%) | 0.401 | |||
Female | 274 (33.41) | 77 (31.30) | 197 (34.32) | |
Male | 546 (66.59) | 169 (68.70) | 377 (65.68) | |
ASA score, n(%) | 0.311 | |||
I | 619 (75.49) | 178 (72.36) | 441 (76.83) | |
II | 189 (23.05) | 65 (26.42) | 124 (21.60) | |
III | 12 (1.46) | 3 (1.22) | 9 (1.57) | |
cT stage, n(%) | 0.367 | |||
cT1 | 1 (0.12) | 1 (0.41) | 0 (0.00) | |
cT2 | 12 (1.46) | 5 (2.03) | 7 (1.22) | |
cT3 | 302 (36.83) | 91 (36.99) | 211 (36.76) | |
cT4 | 505 (61.59) | 149 (60.57) | 356 (62.02) | |
cN stage, n(%) | 0.393 | |||
cN0 | 71 (8.66) | 19 (7.72) | 52 (9.06) | |
cN1 | 8 (0.98) | 4 (1.63) | 4 (0.70) | |
cN2 | 741 (90.37) | 223 (90.65) | 518 (90.24) | |
ypTNM stage (8th AJCC), n(%) | 0.345 | |||
pCR | 171 (20.85) | 60 (24.39) | 111 (19.34) | |
I | 208 (25.37) | 57 (23.17) | 151 (26.31) | |
II | 232 (28.29) | 71 (28.86) | 161 (28.05) | |
III | 209 (25.49) | 58 (23.58) | 151 (26.31) | |
pT stage | 0.089 | |||
T0 | 181 (22.07) | 64 (26.02) | 117 (20.38) | |
T1 | 58 (7.07) | 15 (6.10) | 43 (7.49) | |
T2 | 197 (24.02) | 52 (21.14) | 145 (25.26) | |
T3 | 356 (43.41) | 102 (41.46) | 254 (44.25) | |
T4 | 28 (3.41) | 13 (5.28) | 15 (2.61) | |
pN stage | 0.639 | |||
N0 | 612 (74.63) | 189 (76.83) | 423 (73.69) | |
N1 | 168 (20.49) | 46 (18.70) | 122 (21.25) | |
N2 | 40 (4.88) | 11 (4.47) | 29 (5.05) | |
APR, n(%) | 0.736 | |||
No | 721 (88.03) | 218 (88.62) | 503 (87.78) | |
Yes | 98 (11.97) | 28 (11.38) | 70 (12.22) | |
Neural invasion | 0.441 | |||
No | 783 (95.49) | 237 (96.34) | 546 (95.12) | |
Yes | 37 (4.51) | 9 (3.66) | 28 (4.88) | |
Lymphovascular invasion | 0.164 | |||
No | 794 (96.83) | 235 (95.53) | 559 (97.39) | |
Yes | 26 (3.17) | 11 (4.47) | 15 (2.61) | |
Postoperative complication | 0.607 | |||
No | 698 (85.12) | 207 (84.15) | 491 (85.54) | |
Yes | 122 (14.88) | 39 (15.85) | 83 (14.46) | |
Radiotherapy complication | 0.767 | |||
No | 564 (68.78) | 171 (69.51) | 393 (68.47) | |
Yes | 256 (31.22) | 75 (30.49) | 181 (31.53) | |
TRG grade, n(%) | 0.052 | |||
0 | 171 (20.85) | 60 (24.39) | 111(19.34) | |
1 | 278 (33.90) | 89 (36.18) | 189 (32.93) | |
2 | 312 (38.05) | 77 (31.30) | 235 (40.94) | |
3 | 59 (7.20) | 20 (8.13) | 39 (6.79) |
